Found: a child's drawing for creating a prosthetic limb

My friend Bob Knetzger, who is a toy inventor and does amazing preliminary sketches of his creations, came across some hand-drawn plans for a prosthetic limb. He says:

While on my usual lunchtime walk last summer I saw this piece of paper on the ground and picked it up.

I love this drawing, obviously done by a young maker.

I don’t know who [the kid] is but I like how s/he shows the tools and material needed for this project: wood, saw, glue and pensile (sic).

Draw the shape on the wood, then cut it out with the saw and glue it to the kid, replacing the missing hand!

I’ll bet the person who drew this plays Minecraft!